linking application with a library

David Korn dkorn@pixelpower.com
Fri Oct 12 02:38:00 GMT 2001


>-----Original Message-----
>From: Mohammad Saleem [mailto:mosa@enea.se]
>Sent: 18 November 2001 10:36


>I have a lib mylib.a (20 kb) which I want to link with my application.
>My application gets 20 kb bigger as soon as I link it with mylib.a 
>without any function being called from mylib.a.
>It seems to me that I have built mylib.a so that the whole lib 
>is linked 
>during linking process even if no one method is being called.
>Now my question is which flag should I use to build mylib.a so 
>that only 
>those functions are linked which are being called.
>If no function is called then linking mylib.a shouldn't affect 
>the size 
>of my application.

  Alas, the linker is fairly dumb, and can only include or exclude parts
of a lib file on the basis of the section name (.text, .data or .bss).

  Fortunately the compiler is fairly smart, and has an option
-ffunction-sections that puts every function in a different section.  This
should supposedly do the job you wish.

      DaveK
-- 
Burn your ID card!  http://www.optional-identity.org.uk/
Help support the campaign, copy this into your .sig!


**********************************************************************
This email and any files transmitted with it are confidential and
intended solely for the use of the individual or entity to whom they
are addressed. If you have received this email in error please notify
the system manager.

This footnote also confirms that this email message has been swept by
MIMEsweeper for the presence of computer viruses.

www.mimesweeper.com
**********************************************************************

------
Want more information?  See the CrossGCC FAQ, http://www.objsw.com/CrossGCC/
Want to unsubscribe? Send a note to crossgcc-unsubscribe@sourceware.cygnus.com



More information about the crossgcc mailing list